678037434 has 8 divisors (see below), whose sum is σ = 1356074880. Its totient is φ = 226012476.

The previous prime is 678037421. The next prime is 678037471. The reversal of 678037434 is 434730876.

It is a sphenic number, since it is the product of 3 distinct primes.

678037434 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56503114 + ... + 56503125.

It is an arithmetic number, because the mean of its divisors is an integer number (169509360).

Almost surely, 2^678037434 is an apocalyptic number.

678037434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678037434 is a wasteful number, since it uses less digits than its factorization.

678037434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113006244.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 678037434 is about 26039.1519447159. The cubic root of 678037434 is about 878.5191321487.

The spelling of 678037434 in words is "six hundred seventy-eight million, thirty-seven thousand, four hundred thirty-four".